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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Artificial photosynthesis for alcohol and 3-C compound formation using BiVO4-lamelar catalyst

Full text
Author(s):
Corradini, Patricia Gon [1] ; de Brito, Juliana Ferreira [1] ; Boldrin Zanoni, Maria Valnice [2] ; Mascaro, Lucia Helena [1]
Total Authors: 4
Affiliation:
[1] Univ Fed Sao Carlos, Dept Chem, Rod Washington Luiz, Km 235, BR-13565905 Sao Carlos, SP - Brazil
[2] UNESP, Inst Chem Araraquara, Rua Francisco Degni 55, BR-14800900 Araraquara, SP - Brazil
Total Affiliations: 2
Document type: Journal article
Source: JOURNAL OF CO2 UTILIZATION; v. 36, p. 187-195, FEB 2020.
Web of Science Citations: 0
Abstract

The high levels of atmospheric CO2 transformed this compound in a preoccupant pollutant. However, a wide range of semiconductors, including bismuth vanadate (BiVO4), can be applied for CO2 reduction aiming generation of fuels. This work reports the optimization of the BiVO4 layer synthesis by microwave system using factorial experimental design, where the variables time (5 to 15 min) and temperature (120 to 160 degrees C) were studied. For evaluation purposes, the materials synthesized were applied in photocatalytic reduction of CO2. All the BiVO4 materials analyzed promoted the formation of methanol. The best condition was obtained under the material synthesized at 160 degrees C with 15 min of reaction, where 1.5 mmol L-1 g(cat)(-1) of methanol was produced after 120 min of photocatalysis. For the first time, acetone formation was observed in this kind of material. The best condition for acetone production was acquire with the material prepared at 140 degrees C with 10 min of synthesis, where 0.030 mmol L-1 g(cat)(-1) was generated after 240 min of CO2 reduction. Differences in methanol concentration obtained among the samples were probably related to crystallographic patterns of the material, once the presence of Bi2O3 or other BiVO4 crystallographic species may affect the efficiency of the material. The results obtained in this work show that the use of BiVO4 layer semiconductor prepared by microwave system for CO2 reduction leads to the generation of high amounts of methanol under just UV-vis light incidence, aside from promoting the production of acetone. (AU)

FAPESP's process: 14/50249-8 - Green chemistry: sustainable synthetic methods employing benign solvents, safer reagents, and bio-renewable feedstock
Grantee:Arlene Gonçalves Corrêa
Support Opportunities: Research Grants - Research Centers in Engineering Program
FAPESP's process: 13/07296-2 - CDMF - Center for the Development of Functional Materials
Grantee:Elson Longo da Silva
Support Opportunities: Research Grants - Research, Innovation and Dissemination Centers - RIDC
FAPESP's process: 18/16401-8 - Photocatalysts and photoelectrodes for obtaining renewable fuels
Grantee:Lucia Helena Mascaro Sales
Support Opportunities: Regular Research Grants
FAPESP's process: 18/02950-0 - Photoelectrocatalytic reduction of N2 to NH3 in a photoelectrochemistry reactor with a photoanode-driven of Nb2O5/Pt and cathode of GDL decorated with Fe, Co and Sb2Se3
Grantee:Juliana Ferreira de Brito
Support Opportunities: Scholarships in Brazil - Post-Doctoral